rotary downshift

well like the titel says we needed a new thread this section was getting a little dead latley .. now take in mind ive been refraining from asking this question but after searching a bit and nbot finding any answers /... i thought id as .. can anyone tell me specificaly what they used to attach a breather to their air pump hose? i know enoughto use a breather and a clamp BUT any breather i have found is to damn small and recently ive been having a terrible brain fart in the fabricating section of my bran as well as the spelling lol .. but yeah if anyone can tell me exactly what they used it would be great .... thnx